Which expression is equivalent to 36x + 8ly?

This is a common form of equation known as a difference of squares, it always factors as follows...

(a^2-b^2)=(a+b)(a-b)  in this case:

first let's factor out 4...

4(9x^2-25)  now factor the difference of squares...

4(3x+5)(3x-5)

Step-by-step explanation:

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0